initial import of xf86-video-ati-6.14.2. important changes include:
many evergreen/cayman/fusion features and fixes
R520 feature updates
UMS r6xx/r7xx bug fix (from yours truly)
clang derived fixes
fixes for xorg-server 1.10 (not relevant for us yet)
EXA fixes
adds support for these chipsets:
BARTS - Radeon HD 6850/6870
TURKS - Radeon HD 6570/6670
CAICOS - Radeon HD 6450
CAYMAN - Radeon HD 6950/6970/6990
and several more PCI-IDs for older chipsets